/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/Graph/Nodes/MovieGraphBurnInNode.h
Gets an existing virtual window with the specified resolution, or creates a new one if one does not exist yet.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SVirtualWindow](API\Runtime\Slate\Widgets\SVirtualWindow) > GetOrCreateVirtualWindow ( const FIntPoint & InResolution )